2725891 has 8 divisors (see below), whose sum is σ = 3250944. Its totient is φ = 2234760.

The previous prime is 2725871. The next prime is 2725897. The reversal of 2725891 is 1985272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2725891 - 2¹⁹ = 2201603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2725897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8305 + ... + 8626.

It is an arithmetic number, because the mean of its divisors is an integer number (406368).

2^2725891 is an apocalyptic number.

2725891 is a deficient number, since it is larger than the sum of its proper divisors (525053).

2725891 is a wasteful number, since it uses less digits than its factorization.

2725891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16961.

The product of its digits is 10080, while the sum is 34.

The square root of 2725891 is about 1651.0272559834. The cubic root of 2725891 is about 139.6913438193.

The spelling of 2725891 in words is "two million, seven hundred twenty-five thousand, eight hundred ninety-one".